Micronutrients? S.T.E.M. by Peters and Microplex by Miller

[MateoinLosAngeles]

I stumbled upon this video of Alan Koch talking about fertilizers on Instagram. It is short, less than a minute, and he basically says:

- He fertilizes at full strength for 4 weeks and leaches with clean water on the fifth week. (Unclear if the clean water is still hard or not).

- Says most people don't know that epiphytes need more micronutrients than macronutrients, so he's adamant about adding STEM from Peters or Microplex from Miller.

I tried to find information on this micronutrient vs. macro on epiphytes, as I also wondered if it applied to other non-orchid epiphytic plants. But I couldn't find anything.

Here's the analysis of both products:

STEM

Sulfur(S) - 13%
Boron(B) - 1.35%
Copper(Cu) - 2.3%
Iron(Fe) - 7.5%
Manganese(Mn) - 8.0%
Molybdenum(Mo) - 0.04%
Zinc(Zn) - 4.5%

Microplex

Magnesium 5.43%
Boron 0.50%
Cobalt 0.05%
Copper 1.50%
Iron 4.00%
Manganese 4.00%
Molybdenum 0.10%
Zinc 1.50%

I wonder if the forum has any opinions to share and if there's a general feeling that it'd be helpful to pump micronutrients in a regular fertilizing routine.